Dynamics of an ultra-strongly-coupled system interacting with a driven nonlinear resonator
Abstract
In the ultra-strong coupling regime of a light-matter system, the ground state exhibits non-trivial entanglement between the atom and photons. For the purposes of exploring the measurement and control of this ground state, here we analyze the dynamics of such an ultra-strongly-coupled system interacting with a driven nonlinear resonator acting as a measurement apparatus. Interestingly, although the coupling between the atom and the nonlinear resonator is much smaller than the typical energy scales of the ultra-strongly-coupled system, we show that we can generate a strong correlation between the nonlinear resonator and the light-matter system. A subsequent coarse- grained measurement on the nonlinear resonator significantly affects the light-matter system, and the phase of the light changes depending on the measurement results. Also, we investigate the conditions for when the nonlinear resonator can be entangled with the ultra-strongly coupled system, which is the mechanism that allows us to project the ground state of the ultra-strongly coupled system into a non-energy eigenstate.
Keywords
Cite
@article{arxiv.1705.08688,
title = {Dynamics of an ultra-strongly-coupled system interacting with a driven nonlinear resonator},
author = {Suguru Endo and Yuichiro Matsuzaki and Kosuke Kakuyanagi and Shiro Saito and Neill Lambert and Franco Nori},
journal= {arXiv preprint arXiv:1705.08688},
year = {2020}
}
Comments
10 pages, 11 figures